Wire-perforating machine.



PATENTED OCT. 1'7, 1905 G. ANDRESEN.

WIRE PERFORATING MACHINE.

om 5 2 2 nu O0 /NVEA/mf? ATTORNEY APPLIUAT'ION FILED FEB. 25, 1904.

y TNTTFU STATES PATENT OFFTCTI.

CHRISTIAN ANDRESEN, OF ST. LOUIS, MISSOURI, ASSIGNOR TO LOCK SAFETY PINCOMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MSSOURI.

Specification of Letters Patent.

Patented Oct. 17, 1905.

Application filed February 25, 19011. Serial No. 195,170.

To url/Z whom, t may concern/.-

Be it known that I, CHRISTIAN ANDRnsEN, a citizen ofthe United States,residing' at St. Louis, State of Missouri, have invented certain new anduseful Improvements in Wire- Perforating Machines, of which thefollowing is a full, clear, and exact description, reference being hadto the accompanying drawings, forming a part hereof.

My invention has relation to improvements in wire-perforating machines;and it consists in the novel construction and combination of parts morefully set forth in the specilication and pointed out in the claims.

In the drawings, Figure l is a side elevation of the device. Fig. Z is afront end view of the lower portion of the device. Fig. Sis a top planof the wire-gripping jaws and plate to which they are directly secured.Fig. 4. is a rear end view of Fig. 3. Fig. 5 is a transverse verticalsection on line 5 5 of Fig. 3. Fig. 6 is a longitudinalvertical sectionon line 6 6 of Fig. 2. Fig. 7 is a detail showing atop plan of thestationary jaw with the spring which releases the movable jaw resting onsaid stationary jaw. Fig. 8 is an enlarged section similar to Fig. 6,showing the cuttingblade of the punch passed through the wire with thesevered piece of wire in advance of the blade. Fig. `9 is a transversevertical section on line 9 9of Fig. 8; and Fig. lOisa detail of a wirelength, showing the perforation or eye formed therein.

Primarily the present invention is intended to perforate wire to be usedin the construction of a certain class of safety-pins in which an eye ofthe piercing member is engaged by a tongue carried by either the sheathor stationary member of the pin, though of course the device here shownmay be used to perforate wire for any purpose whatsoever.

The object of the invention is to construct A a machine which willinsure a uniform product, forming an eye in the wire which will alwaysbe symmetrically disposed about the longitudinal axis of the wire andwithout distending the side walls of the perforation thus effected,whereby the cross-sectional contour of the wire length will remainsubstantially uniform throughout even in the region of the eye orperforation aforesaid.

In detail the invention (which need not be limited to the perforating ofwire) may be described as follows:

Referring to the drawings, l represents a suitable standard having anexpanded base 2, the former having mounted in bearing-brackets 3 thereofthe holderll of a reciprocating punch, the upper end of said tool-holderbeing connected, through thc medium of a link 5, to an operating-lever6, pivoted at the upper end of the standard. Formed adjacent to thepivotal axis of thc lever is an eccentric heel or cam 7, which bearsagainst the head 8 of a vertically-operating plunger 9, the lower end ofwhich is provided with a presser foot or plate lO, which is connected tothe standard by the contracting springs ll, the opposite ends of thelatter being secured to pins l2 l2, carried by the standard andpresser-foot, respectively. The forward end of the presser-foot isprovided with an opening 13 for the free passage therethrough of thesocket 4 of the tool-holder, by which the shank of the cutting-blade orpunch 14 is carried. The presser-foot is, moreover, provided with anadjusting screw or bolt l5, having a lower tapering end for a purposepresently apparent.

Secured to the base 2 by bolts 16, passed through elongated openings 17,(to accurately adjust the position thereof alongl said base,) is a plate18, having a central longitudinal slot 19 of suitable depth to allow thccuttings to drop freely therethrough, said plate 1S having securedthereto a block 20, provided with a depression for the reception of thelongitudinally-grooved stationary jaw 21, the groove 22 of the lattercoml'nunicating with a vertically-disposed die-opening 23, locatedimmediately over a circular opening 24 in the block 20, which issuperposed over the slot 19. Secured to the top of the block 2O is aL11-shaped plate or platform 25, there being pivoted at the base of andbetween the arms or lateral members thereof the hinged or movable jaw21, capable of oscillation about the pin 26 as an axis, the longitudinalgroove 22' of said hinged jaw alining with the corresponding groove 9.2of thel stationary jaw, said movable jaw having a correspondingdie-opening 2B leading from the groove 22' and in communication with acircular opening 2a', which allows for the free passage of the stem ofthe IOO blade during the cutting' operation, Fig. 9. Adjacent to thebase of the hinged jaw is a socket which receives the coiled expandingspring 27, resting on the fixed jaw 21, said spring' releasing thehinged jaw from the fixed jaw sufliciently to allow for a free and easyinsertion of the wire w into the tubular opening' formed by the grooves22 22 during the feeding' and immediately preceding the punchingoperations. Secured to the hinged jaw immediately below the screw '15,mounted in the presser-foot, is a plate 28, provided with a g'roove ordepression 29 for the reception of the tapering end of the screw l5 asthe plunger 9 forces the presser-foot downward to force the hinged jawtoward the stationary jaw in the gripping of the wire during thepunching operation.

The operation of the device may be described as follows: By depressingthe long arm of the lever 6 the cam-li/eel 7 forces the plunger 9slightly ahead of the holder 4 of the punch that is to say, it forces itenough ahead to cause the tip of the screw 15, carried by thepresser-foot, to bear against the plate 28 and force the hinged jawagainst the stationary jaw, and thus securely grip the wire, as in avise, between the two jaws. All this time of course the punch isdescending, and with the further depression of the lever 6 the blade 14is forced through the wire, and the cutting' or section fw thus removed,Figs. 8 9, drops through the opening 24 and slot 19 to the floor or intoa receptacle (not shown) placed in position to receive the cuttings. Asthe lever is swung upwardly of course the presser-foot returns to itsnormal position under the action of the spring's 11 11, and the hingedjaw releases the punched wire under the expanding action of the spring'27, permitting the withdrawal of the perforated wire, as obvious. Byreferring to Figs. 8 and 9 it will be seen that for the gripped positionof the wire the walls of the grooves 22 22 do not completely envelop it,this arrangement being' desirable to insure a maximum grip on the wire,a result which would be impossible were the cornbined depths of thegrooves 22 22 sufficient to entirely envelop it, for under thosecircumstances the faces of the jaws would then come in actual contact,and it would be impossible to force them any closer together.

The jaws 21 21l in the presentinstance constitute the die for the punchby which the perforating is effected-that is to say, the die is composedof a fixed and movable section or jaw--and while one of the jaws orsections is here shown as pivoted or hinged it is apparent that anyother equivalentconstruction by which the sections were forced togetherto effect the gripping of the wire would fall within the spirit andcontemplation of my present invention. I may, too, depart from the otherdetails of construction without in any wise affecting the nature orspirit of my invention.

Having described my invention, what I claim is-4 1. In awire-perforating machine. suitable jaws disposed in yielding' relationto one another between which the wire is inserted, means for forcing'thejaws together and gripping the wire between them, and a punch forperforating said wire while held in its gripped position, substantiallyas set forth.

2. In a wire-perforating machine, suitable jaws for gripping the wiredisposed in yielding relation to one another, means for forcing the jawstogether, the latter being provided with alining die-openings, means forholding the wire in the path of said die-openings, and a punch having acutting-blade adapted to pass through said die-opening's and perforatethe wire held in the path thereof, substantially as set forth.

3. In a wire-perforating machine, suitable jaws disposed in yieldingrelation to one another and having oppositely-disposed grooves on theiradjacent faces for the reception of the wire, means for forcing the jawstoward one another thereby gripping the wire, the jaws having aliningopenings leading' from the respective g'rooves, and a punch having acutting-blade adapted to pass through said openings and perforate thewire held in the grooves, substantially as set forth.

4. In a wire-perforating machine, suitable jaws disposed in yieldingrelation to one another and having' oppositely-disposed grooves on theiradjacent faces for the reception of the wire, means for forcing the jawstoward one another thereby gripping' the wire, the jaws having' alining'openings leading from the respective grooves, and a reciprocating punchhaving a cutting-blade adapted to pass through said opening's andperforate the wire held in the grooves, substantially as set forth.

5. In a wire-perforating machine, suitable jaws disposed in yieldingrelation to one another and having oppositely-disposed grooves on theiradjacent faces for the reception of the wire, means for forcing' thejaws toward one another thereby gripping the wire, the jaws having'alining' opening's leading from the respective grooves, a reciprocating'punch having a cutting-blade adapted to pass through said openings andperforate the wire held in the g'rooves, and means for forcing the jawsapart and releasing' the wire at the conclusion of the punching'operation, substantially as set forth.

6. In a wire-perforating machine, a die comprising two sections havingalining openings, and oppositely-disposed grooves on their adjacentfaces communicating' with said openings, a reciprocating' punch having acuttingblade adapted to be received by said openings and sever the wireheld in its path within the IOO IOS

rio

grooves, a reciprocating presser-foot forcing the jaws together wherebythe wire between them is securely gripped, means Jfor actuating thepunch during the gripped position of the wire, and means for forcing thejaws apart upon conclusion of the punching operation, substantially asset forth.

7. In a punching-machine, a die composed of two sections or members inhinged relation to one another, and means for forcing the sectionstoward one another during the operation of punching, substantially asset forth.

8. In a punching-machine, a die composed of a tixed and hinged member,means for forcing the members together and gripping the article to bepunched, and a punch for operating on the article while held in itsgripped position, substantially as set forth.

In testimony wliereolIaIiX my signature in presence of two witnesses.

CHRISTIAN ANDRESEN.

Witnesses:

EMIL STAREK, Gr. L. BELFRY

